曲线斜交钢筋混凝土连续刚构受力分析  

Internal Force Analysis of the Curve Obliquity Reinforced Concrete Rigid Frame Continuous Beam Bridge

作　　者：柴桂红[1] 白鸿国[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300142

出　　处：《铁道工程学报》2008年第4期52-55,共4页Journal of Railway Engineering Society

摘　　要：研究目的:曲线桥梁由于具有独特的弯扭耦合力学特性,使得结构受力相当复杂。本文以北京南站凉水河刚构连续梁中桥为工程背景,探讨曲线斜交钢筋混凝土连续刚构桥的受力特点。研究结论:弯扭耦合和刚壁墩斜交使得曲线斜交刚构连续梁桥的变形、纵向弯矩值比同样跨径的直线梁桥要大,且外边缘的挠度大于内边缘的挠度,曲线梁桥的支反力与同等跨度直线梁桥相比,有曲线外侧变大、内侧变小的倾向。Research purposes： For the peculiar crankle coupling mechanics peculiarity of the curve bridge that the structure internal force is quite intricacy. In the paper the internal force of the curve obliquity reinforced concrete rigid frame continuous beam bridge is discussed as the Beijing South Station Liangshuihe rigid frame continuous beam medium span bridge as the engineering background. Research conclusions：The crankle coupling and obliquity of the rigid pier made the distortion, the vertical moment are greater than the straight bridge＇s of the same spans. And the outboard deflection is greater than the inboard one. The support reactions of the curve bridge have a trend that the outboard support reactions are greater than the inboard ones, contrasted with the straight bridge of the same spans.

关 键 词：曲线桥梁 斜交 钢筋混凝土 连续刚构 内力 变形 支反力 

分 类 号：U441[建筑科学—桥梁与隧道工程]